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Rifaximin for hepatic encephalopathy may prolong survival in patients without HCC

14 Sep 2017

Rifaximin appears to confer increased survival benefit in hepatic encephalopathy patients without hepatocellular carcinoma (HCC), in addition to reducing the risks of spontaneous bacterial peritonitis, variceal bleeding and recurrent hepatic encephalopathy, according to a study.

To evaluate whether rifaximin was associated with the risk of death and cirrhotic complications, researchers retrospectively examined data from 1,042 patients with hepatic encephalopathy who were grouped into two according to HCC status: HCC (n=621) and non-HCC cohorts (n=421).

Overall survival was the primary endpoint. Recurrence of hepatic encephalopathy and the development of spontaneous bacterial peritonitis, hepatorenal syndrome and variceal bleeding were evaluated as secondary endpoints.

In the non-HCC cohort, 145 patients received rifaximin plus lactulose (the rifaximin group) and 276 received lactulose alone (the control group). On multivariate Cox proportional hazards analysis, rifaximin had a protective effect on the risks of death (adjusted hazard ratio [aHR], 0.697; p=0.024), recurrent hepatic encephalopathy (aHR, 0.452; p<0.001), spontaneous bacterial peritonitis (aHR, 0.210; p<0.001) and variceal bleeding (aHR, 0.425; p=0.011) but not on hepatorenal syndrome (aHR, 0.598; p=0.08).

In the HCC cohort, there were 173 patients in the rifaximin group and 448 patients in the control group. Rifaximin reduced the risk of developing spontaneous bacterial peritonitis (aHR, 0.323; p<0.001); no association was observed for the risk of death (aHR, 1.177; p=0.121), variceal bleeding (aHR, 0.660; p=0.104) or recurrent hepatic encephalopathy (aHR, 0.689; p=0.057). The risk of Clostridium difficile-associated diarrhoea did not differ between the rifaximin and control groups (aHR, 0.028; p=0.338).

“Although rifaximin was not associated with lower risk of death in patients with HCC, it has been shown to be related to preventing portal hypertension-related complications. Th[e] present study may support the initiation of a large cohort study to assess the overall efficacy of rifaximin in patients with previous hepatic encephalopathy,” researchers said.

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Most Read Articles
01 Aug 2016
Tigecycline is effective against Acinetobacter spp. and Stenotrophomonas maltophilia, based on the SENTRY Antimicrobial Surveillance Program.
02 Apr 2018
JARDIANCE® (Empagliflozin)
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Rachel Soon, 26 Jun 2018

MIMS Pharmacist presents an overview of phosphatidylcholine's physiological role, as well as contemporary research on its pharmacology and effects.

Pearl Toh, 10 Jul 2018
A dual-hormone artificial pancreas (DAP) with a rapid delivery of insulin and pramlintide in a fixed ratio improves glycaemic control and reduces glucose variability in adults with type 1 diabetes (T1D) compared with first-generation artificial pancreas delivering insulin alone, according to a study presented at ADA 2018.